True Facts: Snake and Lizard Tongues

Publicerades den 17 nov 2020
Dr. Kurt Schwenk
It was a pretty incredible gift to be able to work with Kurt on this episode. His work spans decades and it took multiple tries to understand it in a way that could be put together in a narrative. I am very grateful for all of his time, warmth and generosity. I had to leave many, many wonderful pieces of research and factoids out due to time constraints but I would urge any of you that are interested to dive deeper into his work.
His colleagues Dr. William G. Ryerson, Ms. Amanda E. Hewes and
Ms. Sara Horwitz contributed a great deal to some of the research that I mentioned.
Dr. Margaret Rubega ( deserves thanks for introducing me to Kurt in the first place.

Additional footage licensed from:
Envato Elements


  • Shweink

  • Snake: I'll give an arm and a leg to be the best tongue smeller Evolution: ... make to 2 of each and the super lick-sniffer is yours.

  • The timor monitor is so cute.

  • And from this point on anyone smarter than me is a brain witch.

  • History Channel who? Instant sub

  • Ok yer. Frickin nuts!! And I love it - please don’t stop!

  • Can y’all do a true facts Bearded Dragon

  • 2:54 It almost sounds like he's rhyming.

  • Wow, hilarious. Your voice and humor reminds me of Morgan Freeman. Tongues are interesting in reptilians. I wonder if it is the same for amphibians???

  • 😂🤣😂💜💜💜

  • Can't fool me brain-witch. 🤣

  • You ever felt a chameleons tongue on your eyeball. Its weird.

  • "Brain witches"

  • Never laughed so hard and learned at the same time

  • i was doing the tounge thing until he mentioned the HR violation. It all came to me then

  • Holy crap that is freaking hilarious I would love to see him I am discovery channel or animal planet that something that would definitely pay for

  • Smeoothe is my new favorite word. Thank you Ze. ❤️

  • "Now this cricket already thinks it's having a sh☆tty day.. It get's worse.. Wait fot it... Blllbbblb" 🤣🤣

  • The jokes are funny but there are too much dong jokes

  • "or take half a Viagra"

  • The best comentating I ever saw😭💯

  • If human flick it's tongue it's an HR violation I crack 😆😆

  • Oh shit, Brain Witch.

  • I feel disgusted with the human tongue at the end ;-;

  • Can you do a video on Sea Otters?

  • Lots of insects were harmed in the making of this film..

  • 👍

  • This is perfect. I get a great laugh while learning things.

  • "it's always a demon with d**k horns, can't fool me brain witch"🤣🤣🤣🤣🤣🤣🤣🤣🤣

  • "Can't fool me, brain witch."

  • When is this guy getting a Netflix show?

  • If you actually spend the time to make this and the others,,, amazing, and I subscribed. good time spent

  • "This tounge will blow your mind" *wink

  • 0:46 I DIDN'T DO IT.

  • 😂🔥

  • Whooooose. tounge. is. that?! I'm seriously weirded out ...and also cramping with laughter

  • Ive just stuck my toungue out and waggled it up and down as he said its a HR violation. Pissed myself, this man is a narration genius.

  • =)

  • Call me when that thing's covered with mucus

  • *D O C T O R S H W A N K*

  • Hi Mr... Ah scrBLeepEW introDUCTshuns my Good Man 🙃🙃😊 You are absolutely fuggin hilarious!!! My funny bone_r wants to know Just where in hellnation youve been...yup where are you now? 😍 😜 Pardon, my tounge uulations tangled together. aye gayne. Keep ON BUSTING OUT HIDDEN SMILES, LAUGHTER, RUSTY STALE LUNG Co2 goo. AND YOU HAVE 2 talkies that I can c @ the moment. THANK YOU!! Lets go giggle guffaw & gurgle ya'll! Kaamawn all!

  • I always come away from True Facts feeling both informed, and an unusual combination of feeling uncomfortable and laugh pains. Three in one.

  • HR violation lmao 🤣🤣🤣

  • thanks schwanks

  • Jonny Morris for adults

  • Brain witch🤣🤣🤣

  • True facts about Potoos. Please, those things are weird as heck.

  • I have been so happily watching these for the last, oh, year or two...but I just saw that little "are you human" ted talk and, surprisingly, teared up at one of them (something along the lines of "have you ever looked at someone you thought was totally ordinary and realized they were far more than that"), and then a few that followed....bravo.

  • The brain witches, jesus i died at that

  • I just found this channel and God it is funny! :D "...or taking half of a Viagra..." Dude! thies videos are soo nice!

  • I'm here for the narrator. I stay for the jerry

  • they are actually called legless lizards, not worm lizards.

  • @zefrank1 a question is bothering me for some time now Is Jerry a clam?

  • " Cant fool me brain witch" lol

  • "But this is a shag carpet of *doom* " "Or take half a viagra" Stop killing me dude it's 2am

  • I almost didn't thumbs-up. Then... the raspberry.

  • You should be on public tv, right after Nova.

  • 4:28 When humans do this, it is called an HR violation.

  • “Kinda looks like a snowman’s bebeh maker”

  • H-air violation i can't 😂😂😂

  • I have to remember not to be eating when watching a ZeFrank production... excellent as always!

  • It reminds me of wemons cuchie lmfao

  • “are the new viewers gone yet?” woo! The Show with ze frank! Just us sports races here ze ❤️

    • @sk8grill I think maybe the old viewers are gone 😢 except us! High five ✋

    • Was looking for this comment! sport racer for life!!

  • 2:52 Sorry? I feel like my ears just had a stroke

  • Bob theres something out the window no im not making it up, bob its.. bob can can you come here, bob...BOB!!


  • Lmao! Brain Witches.... I have been laughing at this for so long I had to rewind the video

  • "Have we lost the new viewers yet?" LOL.

  • Shame on utube for not showing me these sooner! Omgoodness I laughed all the way thru these...And learned! Thank you!! Stay safe 😷

  • 0:46 The sheer disappointment in his voice is hilarious.

  • Mark Zuckerberg can relate to this.

  • 4:25 "When humans do this it's called 'an HR violation'". Tell me about it.

  • Dr. Kurt Schwenk seems like a great guy. I particularly enjoyed his breakdown of jokes at the end and his very clinical observation of the gap which only serves to make it more hilarious.

  • Brain Witch. Hahaha I lost it again.

  • The image of the lizard on his belly I lost it. 😂😂😂😂

  • ZeFrank is the Best thing on SEnewss

  • I’m in a collage course. Note COLLAGE and this was one of the suggested videos they put up. I have never laughed so hard

  • Where learning is indeed fun!

  • “Deep throating a squirrel’s butt ! “🤣🤣 I just discovered him today and here I am watching each and every video of his !

  • Please zefrank please narrate a video about the Humphead Parrot Fish. Please Dude, it would be so F***ing Hilarious.

  • Who flipped their tongue untill you realised it's a HR violation 😆

  • E x p l o s i o n O f T o n g u e

  • Shag carpet of DOOM

  • Schwenk is an absolute legend. Props for being so helpful to the video, I respect.

  • "How do tiny molecules on the bottom of the tounge tines get to little holes in the mouth on the top?" Just for anyone who wanted to say it. ... I could barely type this, btw. No idea how Zefrank _said_ it...

  • Are you going for what's called a Mid-Atlantic accent? Kinda sounds a bit fancy, but not exactly British.

  • Evolution: oh yeah, there's time

  • That bit at the end is a definite HR infraction.

  • It's like a nature documentary being ad-lib narrated by Morgan Freeman after he's had a glass or two of his favourite drink~

  • Never take half a viagra

  • Thanks Zefrank! These are both funny and fascinating. You clearly communicate very significatnt details. I used to study zoology with a special interest in ethology. If I were a professor or even a science teacher, I would instruct my students to watch these videos. Good stuff!

  • "You can't fool me, brain witch!"


  • You know... there's some videos that you should not watch until the very end.. I need holy water now

  • can't fool me, brain witch. wish we had this in science class. 1000% more interesting than anything i was ever taught

  • That's what he said.

  • awesome!!!!

  • is nobody gonna talk about the elevator fart at 4:44

  • an H R VIOLATION ??????????? 😂😂😂😂😂😍

  • Jerry needs a raise for entertaining us